Update .eslint rule to affect only a restricted scope

bigbluebutton-html5/.eslintrc.js

@@ -25,7 +25,6 @@ module.exports = {
     'jsx-a11y/no-access-key': 0,
     'react/jsx-props-no-spreading': 'off',
     'max-classes-per-file': ['error', 2],
-    'no-param-reassign': ['error', { props: false }],
   },
   globals: {
     browser: 'writable',

bigbluebutton-html5/imports/ui/components/muted-alert/component.jsx

@@ -77,10 +77,12 @@ class MutedAlert extends Component {
     }
   }
 
+  /* eslint-disable no-param-reassign */
   enableInputStreamAudioTracks() {
     if (!this.inputStream) return;
     this.inputStream.getAudioTracks().forEach((t) => { t.enabled = true; });
   }
+  /* eslint-enable no-param-reassign */
 
   resetTimer() {
     if (this.timer) clearTimeout(this.timer);